IGCSE - Movement of Substance

Where is there a low concentration of dye?

• at the bottom of cup

• in the dye

• at the top of cup

• at the sides of the cup

Dissolved gases move between the blood and body cells by which process?

• absorption

• respiration

• diffusion

• osmosis

Which of the following statements about diffusion is true?

• substances move from high to low concentration

• diffusion only happens across a partially permeable membrane

• water moves from high to low water potential

• substances move from low to high concentration

What happens during osmosis?

• water molecules moves from high to low concentration without the use of energy

• water molecules moves from high to low concentration with the use of energy

• water molecules moves from high to low water potential without the use of energy

• water molecules move from high to low water potential with the use of energy

Where is the highest water potential?

• in the flower

• cannot be determined by picture.

• in the vase

• in the leaves

Which way would the purple molecules move through the semi permeable membrane?

• From the A side to the B side

• From the B side to the A side

• None of the purple molecules would move.

Tags

NGSS.MS-PS1-1

What is the direction of osmosis?

• From left side to right side.

• From right side to left side.

Which solution, the one on left or the one on right, has a higher water potenital?

• the one on the left

• the one on the right

What is the definition of  Selective Permeability?

• The movement of materials across the cell membrane that requires NO ENERGY from the cell.
  
• The movement of materials through (or across) the cell membrane
  
• The ability of the cell membrane to allow some things to pass through while preventing other things from passing through.
• The movement of molecules from an area of high concentration to a area of low concentration 
  

Tags

NGSS.MS-LS1-2

If there is 5 percent water inside a cell and 5 percent water outside a cell

• more water will move inside the cell

• more water will move outside the cell

• There will be no net movement of water, it moves into and out of the cell at the same time.

Tags

NGSS.MS-LS1-2